DTC U1114: Lost Communication with Main Switch Module [09/2015 - ]: Procedure
- PRECAUTION NOTE:
After turning the engine switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work (Refer to PRECAUTION [09/2015 - ] ).
Result: NEXT
NEXT
See step 2
- DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
- Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the CAN main wire and the CAN branch wire.WARNING:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
NOTE:When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Refer to INITIALIZATION [09/2015 - ] ).
Result: NEXT
NEXT
See step 3
- Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the CAN main wire and the CAN branch wire.
- CHECK FOR OPEN IN CAN BUS WIRE (OUTER MIRROR SWITCH ASSEMBLY CAN BRANCH WIRE)
- Disconnect the outer mirror switch assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Switch Condition Specified Condition L6-2 (CANP) - L6-3 (CANN) Engine switch off 54 to 69 Ω TEXT IN ILLUSTRATION*a Front view of wire harness connector
(to Outer Mirror Switch Assembly)
Result: NG
NG
REPAIR OR REPLACE OUTER MIRROR SWITCH ASSEMBLY CAN BRANCH WIRE OR CONNECTOR (CANP, CANN)
Result: OK
OK
See step 4
- Disconnect the outer mirror switch assembly connector.
- CHECK HARNESS AND CONNECTOR (OUTER MIRROR SWITCH ASSEMBLY - BATTERY AND BODY GROUND)
- Connect the cable to the negative (-) battery terminal.NOTE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Refer to INITIALIZATION [09/2015 - ] ).
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition L6-12 (B) - Body ground Always 11 to 14 V L6-11 (IG) - Body ground Engine switch on (IG) 11 to 14 V - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition L6-1 (E) - Body ground Always Below 1 Ω TEXT IN ILLUSTRATION*a Front view of wire harness connector
(to Outer Mirror Switch Assembly)
Result: OK
OK
REPLACE OUTER MIRROR SWITCH ASSEMBLY
(Refer to REMOVAL [09/2015 - ] )
Result: NG
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
- Connect the cable to the negative (-) battery terminal.